The Noritz Indoor Concentric Vent is engineered for natural gas systems, supporting a maximum output of 180,000 Btuh and a flow rate of 8.3 Gpm. This venting solution is designed for indoor installations, providing efficient exhaust and intake in a single unit. Made from durable materials, it ensures long-lasting performance and compliance with industry standards. The concentric design simplifies installation and minimizes space requirements, making it ideal for residential and commercial applications. This vent is compatible with various Noritz water heater models, enhancing overall system efficiency.